Cable maven's net worth down 30% as recession clips investments; stakes in AT&T and Comcast down 15% and 20%, respectively, since August 2008. Holds estimated $120 million stake in Energy Transfer Equity; shares up 100% since November low. Stockbroker's son invested $4,000 in cable company with frat brother 1963. Continental Cablevision grew into largest privately held cable company in country; sold to US West for $11 billion 1996. Later bought company back, renamed MediaOne; sold to AT&T for $58 billion 3 years later. Invests via Pilot House Associates.